Type-writing machine.



T. L. KNAPP. TYPE wmme 111101111111. APPLIOATI ON FILE!) D110. za'. 1911.

1,046,469. Patented Dec. 10, 1912. 1

JL i

4 that the following is a full, clear, and exact iinrrnn s'rarns rarnnr orrron.

THEBON L. KNAPP, or woons'rocx, ILLINOIS, ASSIGINOR TO THE OLIVER ryrnwni'rnn COMPANY, or CHICAGO, ILLINoIs, A CORPORATION or ILLINOIS.

' TYPE-WRITE}! G MACHINE.

Application filed December 23, 1911.

Specification of Letters Patent.

Patented Dem-10 1912. Serial No. 667,470.

To all 107mm it may concern:

Be it known that I, THERON L. KNAPP, a citizen of the United, States, and a resident of Woodstock, in the county of McHenry and State of Illinois, have invented certain new and useful Improvements in Type- Writing Machines; and I do hereby declare description thereof, reference being had to the accompanying drawings, and to the letters of "reference marked thereon, which form a part of this specification.

This invention relates to certain novel features of construction in typewriting machines of the kindhaving a platen-shift mechanism by which the paper-carriage is moved or shiftedtc bring the platen into position to receive an impression from either of the "plurality of types carried by each of the type-bars.

The improvements shown and described herein, and which constitute the present invention, are illustrated in the accompanying drawings, as applied to an Oliver typewriting machine, such as shown in the prior patent to H. Cross, No. 837,611, granted December 4, 1906. Said improvements, however, may be applie$ to other kinds of typewriting machines of the double shift t e.

he. invention consists of the matters hereinafter described and more particularly pointed out in the appended claims.

In the drawings illustrating my invention-Figure 1 is a view representing a fragmentary longitudinal vertical section through the hollow base of a typewriting machine, the plane of the section. being 10- v cated adjacent one of the lateral depending flanges of the hollow base and taken in a plane indicated by the line 1-1 of Fig. 3; Fig. 2 is a partial top plan view of the parts of the machine shown in Fig. 1; Fig.

3 is a view representing a partial vertical section through the parts of the machine shown in Fig.1 in a lane indicated by the line 3-3of Fig. l; ig. 4: is a perspective view of a spaclng plate to be referred to later. i

As shown in the drawin s, A indicates the base-frame of the machine. Said baseframe has a horizontal top wall or portion a and the depending flanges, or marginal walls c at the sides and back parts thereof. forming a hollow structure within which the operating levers are locatedand supported In a familiar manner. The hollow base A I hereinafter referred to.

B indicates a shift-frame (the one end of which appears in-the drawings) of the ,form employed in the Oliver typewriting machine, such as described and shown in the patent heretofore'named. Said shift-frame B in this-kind of machine is located above the top horizontal wall a of the hollow baseframe of the machine and is capable of movement backward and forward to edther side of a central position, so that the paper on the. platen of the paper-carriage (not shown) carried by the shiftframe will be brought into position to receive the impression from either of the plurality of types carried by each of the type-bars. I

C, C indicate the shift-levers located at the left-hand side of the machine. Said shift-levers extend in a direction from the front to the rear of the machine and are pivotally connected at their rearends to the top horizontal w'all a of the base-frame by means of a horizontal rod 0 extending transversely of said shift-levers. Depressing one of the shift-levers C, will cause the shift-frame B to be moved or shifted to one side of a central position while depressing the other of said shift-levers C, C,-after the first depressed shift-lever has been released, will cause the said shift-frame B to be moved or shifted to the other side of said central position, for the purpose above described.

D indicates a spring which acts on the shift-lever C to lift the same and which tends to return the shift-frame B to its central position when shifted to either side thereof. A similar spring (not shown) is provided for the shift-lever C.

Referring to the means for supporting the forward end of the shift-frame B, E indicates a depending arm whiel; extends downwardly from the end I; he shift frame B, through an opening??? iformed in the top wall a adjacent the upright marginal wall a of the hollow machine base. As shown in the drawings, 'said arm E is madenseparateirom. the main part of the shift-frame 'B and "is rigidly connected thereto by screws e1 Said arm E is suspendsubstantially as shown in the patent granted of said vtop wall a and is connected at'its forward end of the shift-frame B in such a ture it through the lateral edges of the suspension link F of relative oscillatorymovement between the spacing screw on which it is mounted, said depending arm and the suspension link are prevented from coming into contact near their upper ends by reason of a bending or flexing movement toward each other, as would be possible in case of the us'e'of-a simple spacmg washer,

ed from the top wall a of the machine base by means of a link or hanger E, which is connected at its upper end by a transverse pivot-screw f to a longitudinally extending plate G rigidly secured to the upper surface.

as heretofore used, The lugs h, h and 72?, if, not only retain the spacingplate in its operative position between the depending arm E and the suspension link F, as above described, but in addition said lugs are atnadvantage in assembling the machine by reason of the fact that they act to hold the suspension link in vertical position while the shift-frame is being secured in place.

1 c'laimas my invention I 1. A device of the character described, in combination with two relatively movable members, a pivot-member providing pivotal connection between 'saidmembers at one of their ends, and a spacing plate located between said members and rotatively .sup; ported upon said pivot-member, said plate extending between said members from said pivot-member to a point remote therefrom and being provided at its lateral margins with oppositely dis osed pairs of outwardly bent lugs adapted or engagement with the respectivelateral edges or said members.

lower end by a transverse pivot-screw g to the lower end of the arm E. A similar construction, as shown and described, is pro vided at the opposite end of the shift-frame B; The links or hangers F thus support the manneras to permit a forward and backward movement of the same from an intermediate central position by the swinging .of the lower ends of said links forwardly and backwardly from a central vertical position.

The construction thus. far described, is

o-George J. Griffithalio. 1,015,559, and dated January 23, 1912, and needs no further description.

H indicates a spacing tween the depending arm E and the suspension link F and is provided withan aperwhich extends the pivotscrew g. By this construction the plate is rotatively supported. Said plate H extends upwardly between the depending arm E and the suspension linkF-to a point distant or remote from: the pivot-screw g. As shown in the drawings, said plate H is provided with two oppositely disposed pairs of lugs, one pair h, h/ at its upper end, adapted to engage the lateral edgesof the depending eplate located bethe combination with a support, a shiitable member mounted thereon, an arm rigidly suspension link or hanger pivoted at its uparm E, and the other P811, h", 12?, vertically per end to said shiftable member, a pivotbelow the .first pair andadapted to engage member providing a pivotal connection be tween saidarm and link at their lower ends, and a spacing plate located between said arm and link and 1 otatably supported upon said pivot-memberfsaid plate extending upwardly between said arm'and link from said piiot-member to a point remote therefrom, an pairs of outwardly projecting integral lugs adapted for engagement with the respective lateral edges of said'arm and link. p

In testimony, that I claim the foregoing as my invention 1 afiix my signature in the presence of two witnesses, this 18th day of Thelugs of-each pair are spaced a sufficient distance apart to allow for a slight amount late/and the member adapted to be engaged y the lugs. By reasonof the said lugs, th'e'plate- H is held; in its spacing or operative osition between. the depending arm and t e suspension link-and is pre vented from moving therefrom by rotating or swinging around the pivot-screw g. This construction provides asimple and efficient means for spacing the depending arm and thesuspension linker hen er apart-through- December A. D. 1911.

out theirentire length. ioreover, by rea Till 236E L KSIAPTP. son of theplate extending upwardly between Witnesses: 1 a 'i'finidepen ing armand-the suspension link B. C. YOUNG, i i

to pemt rezn ote or distant 'Erom'the gz-gro in. J. MULLEN.

James thiipa'tent may-be obtained. for five cents each, by addressing them, Gemmissi'oner of 'Eatenta, .Weshington, 33. t3.

r 2. In a' device of the character described,

being provided with oppositely disposedsecured at its upper end to said support, a 

